We don't know more beyond the previously leaked information. Hopefully we'll get more details about his inclusion in the coming weeks.

Update: Sadly Mortal Kombat (2011) did not win the Most Anticipated Game of 2011, that went to the Portal 2. It was a tough fight fans, but thanks for all the write in votes for the game. We heard MK actually had a shot, but it's hard to win when the game wasn't given a proper nomination slot.

Crap, completely forgot about this and only caught the last part with the Uncharted 3 teaser (which had me salivating). The vid isn't loading for me so I'll have to watch the replay for the terrible ceremony for MK.
Batman is looking extremely hot too... God, WB Games is going to have a great 2011.